Ecologically friendly, light powered Eco-Drive Caliber E870 Japanese-quartz movement; Charges in natural sunlight or indoor light Max power reserve: 180 days; Low charge warning: 3 days; Charge time from stop state to max charge: Incandescent Light – 150 hours, Outdoors, Cloudy (10,000 Lux) – 45 hours, Outdoors, Sunny (100,000 Lux) – 8 hrs Durable,...
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